Printing-machine delivery mechanism.



H. LEE. PRINTING MACHINE DELIVERY MECHANISM.

APPLICATION FILED FEB. 23. 1915.

Patented Oct. 31,1916.

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Patented Oct 31, 1916.

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PRINTING'MACHINE DELIVERY MECHANlSM.

APPLICATION FILED FEB. 23. 1915.

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H. LEE.

PRINTING MACHINE DELIVERY MECHANISM.

APPLICAIION FILED FEB. 23, \9l5- Patented Oct 31, 1916.

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I I INVENTOR. fikw %7 I 7 02vze1 g HARRY LEE, OF STOCKPORT, EN GLAND.

PRINTING-MACHINE DELIVERY MECHANISM.

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application filed February 23, 1915. Serial No. 10,084.

To all whom it may concern Be it known that I, HARRY LEE, a British subject, residing at Stockport, county of Chester, England, have invented certain new and useful Improvements in Printing-Machine Delivery Mechanism, of which the following is a specification.

This invention relates to delivery mechanism for rotary printing machines in which the printed sheet is taken from the impression cylinder and conveyed to the delivery table printed side up without having been touched on the printed side.

It is designed to so dispose and arrange the delivery mechanism in such machines that the sheets may be fed to the top of the impression cylinder, taken off the same at or near the bottom, and carried outward therefrom printed side downward, conveyed to a delivery table at a higher level than the take off, and at the same side of the machine and beneath the feed board and delivered thereon printed side up on the delivery table.

The invention consists in the novel arrangement and combination of parts hereinafter more fully described, which arrangement is designed to effectively produce the results contemplated by the invention.

The invention will be fully described with reference to the accompanying drawings in which sufiicient of a rotary printing machine is shown to illustrate the invention.

Figure 1. is a side elevation partly in section and the side framing removed on line Fig. 3, showing the invention applied to a machine with drum and cutter for rotary cutting. Fig. 2. is a diagrammatic sectional elevation without the drum for 1'0- tary cutting. Fig. 3. is an end elevation with printing and impression cylinders removed. Fig. 4. is a transverse section on line y g Fig. 1. Fig. 5 is a diagrammatic sectional elevation of a modification showing the substitution of a chain J for the rotary arm D.

The printing cylinder A, the impression cylinder B, the drum 0 for rotary cutting with rotary cutter c, the rotary gripper arms D and the endless chains F with grippers G are all of ordinary construction.

The rotary gripper arms D fitted with gripper bar at at their extremities are placed behind the impression cylinder B the axes about which they rotate being at a much lower level than the center of the cylinder, their axes being preferably about level with the bottom of the cylinder B. The gripper arms D are mounted upon disks or wheels E rotating on studs 6 fitted into the framing. This construction without a shaft between the axes of the gripper arms D permits of the printed sheets S falling clear of any obstruction. The gripper arm on one side is driven by the gearing e from the impression cylinder B and at the other side by the wheels 6 6 e, or both disk or wheels E may be driven direct by gearing or friction pulleys from the impression cylinder. The gripper bar cl extends between the two arms D and carries the grippers cl which seize and carry forward the printed sheets S. 1

WVhere it is desired to cut the sheets longitudinally a rotating drum C is mounted above the axis of rotation of the gripper arms D and is provided with gripper c to take the sheets therefrom and carry them past a rotary cutting knife 0 to cut the sheets into two. The drum C and grippers c thereupon move in the same direction as the grippers cl carried upon the two gripper arms D. The grippers c and cl are opened by their respective, cams o and (Z and as the drum C and arms D rotate, the grippers 0 take the printed sheets from the grippers (Z in the ordinary well known manner common in all printing machines. In this particular instance, however, it may be preferred to have the grippers c rotate faster than the grippers (Z so that the grippers 0 will always be so positioned and open to receive the sheet being delivered by the grippers (Z. In this way, all liability of the grippers 0 contacting with the printed surface of the sheet will be obviated. However, this disadvantage may be overcome in any other approved manner.

Two endless traveling chains F carrying transfer or delivery grippers G, ,on bars 9 pivoted between the two chains are mounted upon carrier wheels above the path of rotation of the gripper. arms D to receive the printed sheets S either from the rotary drum 0 or direct from the grippers d of the rotary arms D and deliver them upon the delivery table H.

The delivery table H to receive the printed sheets S is placed at the same side of the machine and beneath the feed table K between the upper and lower lengthsof the endless traveling chains F so that the gripper bars 9 and grippers Gr travel beneath and then above the table II.

The gripper bars are fitted at their ends with crank projections g to engage cams set in the path of their travel to open the grippers to receive and release the sheets S, the grippers being closed by springs in the ordinary way.

Instead of the gripper bar (Z and grippers (l being carried on rotary arms they may be carried on endless chains J as shown in Fig. 5 carried on wheels or pulleys in a manner similar to the delivery grippers to be transferred therefrom either to the rotary cylinder C or to the delivery grippers G.

The endless traveling chains F and delivery grippers are driven in any convenient manner by train of gearing or otherwise from the impression cylinder B or other rotating part of the machine it being preferably such as to check the chains and grippers when the machine checks.

In operation the printed sheet S, is taken from the underside of the impression cylinder B by the grippers (Z printed .surface downward and carried forward thereby. The rotary cylinder 0 when employed for cutting takes the sheet from the grippers d and carries it around printed side away from the drum against the cutters o and subsequently delivers it to the delivery grippers Gr. lVhen the rotary cylinder C is ab" sent as in Fig. 2 the delivery grippers G take the sheet direct from the grippers cl. The delivery grippers G having received the sheet S carry it around the end of the delivery table H between the chains F the chains themselves passing over the wheels and lays it on top of the table printed side up. It is thus evident that from the time the sheets leave the impression cylinder B until they reach the delivery table H printed side up that they are not touched on their printed side since by the use of the gripper arms D mounted on wheels or disks E and studs 6 there is nothing for the printed side of the sheets to come in contact with until they are Seized by the grippers on the rotary drum C and thenor direct, by the delivery grippers G, and subsequently nothing for the printed side of the sheets to come in contact with by reason of the bars 9 of the delivery grippers G being mounted between the endless chains F until they are finally delivered to the table H printed side up.

That I claim as my invention and desire to protect by Letters Patent is 1. In a sheet delivery mechanism for rotary printing machines, the combination with a feed board, an impression cylinder and gripping mechanisms carrying a transverse gripper bar, said mechanisms. being arranged one on each side of the machine cooperatively with the impression cylinder, of studs on which said mechanisms are mounted so as to provide a clearance between each gripper mechanism, the gripper mechanisms being so disposed relatively to theimpression cylinder as to take the printed sheet from off the under side below the center thereof, means for operating said mechanisms, spaced and endless chains carrying delivery grippers disposed above the gripping mechanisms to receive the printed sheet therefrom and to deliver the same with the printed side uppermost, and delivery table disposed between said spaced chains and between the runs thereof and-below said feed board.

2. In a sheet delivery mechanism for rotary printing machines, the combination with a feed board, an impression cylinder, and rotary gripper arms carrying transverse gripper bars, of two disks upon which said arms are mounted and arranged on opposite sides of the machine, studs on which the disks rotate and disposed relatively to the impression cylinder so that the grippers take the printed sheet from off the under side of the cylinder face downward, an endless chain disposed above each gripper arm, delivery grippers carried by said chains to receive the printed sheet from said gripper arms, and a delivery table disposed between the runs of said chains at a higher level than the gripper arms and below the feed board.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HARRY LEE.

HARRY BARNFATHER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. 0. 

